digg.com for ubuntu users? Maybe, but like the earlier version of digg; voting on just the nodes(just the voting). Zen theme in new pajamas! nodes have slideshow of imagefield pics(http://ubuntuwatch.com/node/12), with rip-off of the background buttons for multiple pics, from the lullabots! sorry :P sorry to moshe too ;-) (but you have it in new avatar now ;)
I don't plan to commercialize/earn-from-it in any way, if someone of you thought, it was part of my fun times, playing and implementing with Drupal. It was ready since the oct of '07 but could get it online in dec month. And after all Thanks http://HCoop.net/ !
(i know there are poor way of implementations, hacky job on vote button(half rip-off from rubybaboon), and peekaboo bugs are treating me good for IE.., etc..)
No, it's not based on drigg, project from scratch, but I recommend it to anyone who plans to begin with drupal building a similar website. I'll try to publish the recipe in the near future, if time allows... :)
After all hobby projects don't get your skills rusted, what do you say?
http://ubuntuwatch.com/